| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which we have been [verb] [prep] | 17 |
|
| 2 | which we have been [v-ing] [prep] | 10 |
|
| 3 | which we have been [verb] [prep] | 9 |
|
| 4 | which we have been [vb pp] [prep] | 7 |
|
